http://mmajunkie.comUFC vet Fabricio Camoes (13-6-1 MMA, 0-1-1 UFC) is back in the fold to fill a vacancy at UFC on FX 1.

Sources close to the event today told MMAjunkie.com (www.mmajunkie.com) that the Brazilian is set to meet octagon newcomer Reza Madadi (11-2 MMA, 0-0 UFC) at the event. Tatame initially reported the matchup.

Madadi initially was slated to fight Rafaello Oliveira (14-5 MMA, 1-4 UFC) at next month’s event before an injury forced him off the card.

UFC on FX 1 takes place Jan. 20 at Bridgestone Arena in Nashville, Tenn. Camoes vs. Madadi is slated for the event’s preliminary card, which is expected to air on FUEL TV. The main card airs live on FX.

Camoes returns to the octagon after a decision victory over “The Ultimate Fighter 8″ winner Efrain Escudero in May at Tachi Palace Fights 9. It was his second consecutive victory after a decision loss to Kurt Pellegrino at UFC 111 that prompted his exit from the octagon. The 33-year-old Camoes was set to fight Thomas Denny at Tachi Palace Fights 11 before the short-notice UFC booking arose. The submission specialist underwhelmed in his UFC debut and fought Japanese veteran Caol Uno to a majority draw at UFC 106.

The 31-year-old Iranian-born “Mad Dog” Madadi is riding a six-fight win streak that includes consecutive wins over big-show veterans Rich Clementi, Carlo Prater and Junie Browning. After dropping his professional debut in 2006, Madadi since has earned 11 wins in 12 trips to the cage. Six of Madadi’s professional wins have come via submission, and his two losses have each come via decision.